Talk:Marcel Tolkowsky

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Here are some questions that the article could address, preferably with citations.

Master's thesis

 * What was the subject of Tolkowsky's Master's thesis?
 * Have any wikipedians seen the thesis?
 * Were Tolkowsky's scholarly pursuits typical of the place he went to school?

Early parameterized diamond designs

 * Did anyone else publish a parameterized diamond design before Tolkowsky?

Biography

 * Where was Tolkowsky born?
 * Where did he grow up?
 * Where did he spend his adult life?
 * How long was he actively in the diamond cutting business?
 * How he mange to discover the round shaped diamond ? — Preceding unsigned comment added by 103.54.98.209 (talk) 07:28, 10 June 2017 (UTC)

Diamond designs

 * Did he ever propose modifications to his 1919 round brilliant design?
 * His family was cutting diamonds circa 1919.
 * Did these diamonds have girdles?
 * What angle were the star facets cut at? 15 degrees?  or 19-20 degrees?
 * How steep were the upper girdle facets?
 * How many sides did the crown main facets have? 4? or 6?
 * How long were the lower girdle facets?
 * In 1919, Tolkowsky wrote that "The diamonds used as gems are generally colourless or only faintly coloured ; it can be taken that all the light that passes into the stones passes out again."
 * Using the modern color grading scale, what color were the diamonds that Tolkowsky was working with?
 * Did his assumption that "all the light that passes into the stones passes out again" cause a significant error? See Talk:Material_properties_of_diamond
 * The quotation is from

Relatives in the diamond business

 * How large was Tolkowsky's family's diamond business?
 * Where was the business located? Antwerp, Belgium
 * How much did the business grow while Tolkowsky was actively involved in it?
 * Is the business still going as an independent concern? Yes, it is called Tolkowsky and Sons, currently run by Gabi Tolkowsky.
 * Did Tolkowsky ever work in other people's businesses?
 * How many generations of Tolkowsky's ancestors were in the diamond business?
 * Did Tolkowsky have any descendants? Yes, most of them live in Antwerp, Belgium.
 * Besides Gabi Tolkowsky, did any of Tolkowsky's younger relatives go into the diamond business? Gabi's son is also working in the industry as is his daughter.